使用RE让Python在某个时间停止从文件中打印行

Question

基本上，我要做的是让它打印在用户输入的特定范围内具有时间戳的文件行。

import sys, re

f = open('log.txt', encoding='ISO-8859-1')
h = open('errorsfound.txt', "w")
print("What time do you want to begin searching the logs?")
starttimestamp = input()
starttimestamp = str(starttimestamp)
print("What time do you want to stop searching the logs?")
endtimestamp = input()
endtimestamp = str(endtimestamp)
use = False
lines = f.readlines()
for line in lines:

  if re.search(starttimestamp, line): use = True
  if re.search(endtimestamp, line): use = False
  if use:
      if "error" in line:
          h.write (line)
  if use:
      if "Failed" in line:
          h.write (line)
  if use:
      if "ERROR" in line:
          h.write (line)
  if use:
      if "WARN" in line:
          h.write (line)
  if use:
      if "Requeue:" in line:
          h.write (line)


f.close()
h.close()

从一定时间开始，我可以将其打印到印刷品，但是在一定时间后我很难停止打印。时间戳为格式04:00:48。因此，当它提示时，我输入说04:00:48作为开始时间，而04:15:48作为结束时间。我是一个相当新的编码员，所以如果我遗漏了任何东西，我深表歉意。谢谢您的查看！

Answer 1

作为一个新的编码器，您缺少某种格式，但无论如何工作！

在时间的时间里，您应该习惯使用诸如DateTime之类的模块，使用str（）输入是多余的（如果在排队中的my_text：然后x），但是无论如何，re是一个不错的工具。

import sys, re
import datetime

f = open('log.txt', encoding='ISO-8859-1')
h = open('errorsfound.txt', "w")
print("What time do you want to begin searching the logs?")
starttimestamp = str(input()) # redundant use of str()
print("What time do you want to stop searching the logs?")
endtimestamp = str(input())   # redundant use of str()
# use = False # bad name for a variable, use more descripting ones
write_time_flag = False
lines = f.readlines()

"""
    my_solution
"""

try:
    start_time_stamp = datetime.datetime.strptime(input, "%H:%M:%S")
    break
except:
    print("Use Format Hours:Minutes:seoconds (HH:MM:SS)")

try:
    end_time_stamp = datetime.datetime.strptime(input, "%H:%M:%S")
    break
except:
    print("Use Format Hours:Minutes:seoconds (HH:MM:SS)")

for line in lines:

  # I don't know the format of your log file so, read the hours with datetime
  # and check condition

  if readtime > start_time_stamp and readtime < end_time_stamp:
      use = True
  else:
      use = False

  if use:
      if "error" in line:
          h.write (line)
      elif "Failed" in line:
          h.write (line)
      elif "ERROR" in line:
          h.write (line)
      elif "WARN" in line:
          h.write (line)
      elif "Requeue:" in line:
          h.write (line)

f.close()
h.close()